Electronics Forum: drifting (Page 1 of 13)

Quad QSP-2 FeederBase calibration drifting

Electronics Forum | Wed Jun 19 10:11:59 EDT 2019 | jamesn

Hi to everyone I hope someone can help me with a problem I have on a Quad QSP-2. when calibrating ( Or trying to use ) Feeder Bases 2 and 4 on gantry 2 Im getting small amounts of accumulative drift in the X axis. I have changed the servo amplifier

Quad QSP-2 FeederBase calibration drifting

Electronics Forum | Wed Jun 19 10:49:00 EDT 2019 | jamesn

Thanks Bob for the speedy reply I will check these out and let you know Kind Regards James

Quad QSP-2 FeederBase calibration drifting

Electronics Forum | Wed Jun 19 10:40:07 EDT 2019 | bobpan

The only thing left is the read head. Older read heads tend to 'weaken' with age. Sometimes some engineers will shim them up closer to the scale using a 10 mil shim. You could also swap them between gantries...i dont think they are to tough to get to

Yamaha YM84 S2 / Philips CSM 60

Electronics Forum | Thu Sep 24 00:52:41 EDT 2015 | ermani9

Hi.. Move the XY arm to the center of the machine. Turn on the servo then immediately hold “LOWER” then press “ORIGIN”. You should see the message now on the screen “DRIFT CHECK”. The arm will start to drift without an emergency condition occurr


Electronics Forum | Mon Sep 27 15:13:50 EDT 2004 | bobpan

John....Are you positive the machine is drifting.....Are the pickups drifting too???? If they are....then you do have a drift prob....if they are still on....sounds like false fiducial finds. Good luck.

YM-84 Error after power on: 243 Y-AXIS DRIFT ADJUSTMENT NO GOOD

Electronics Forum | Sat Oct 24 10:41:40 EDT 2020 | phomann

Hi, This error popped up while running a panel through the machine. I put the machine into the Drift adjust mode and the y axis was drifting, but not smoothly like the X-Axis was. The Y-axis was drifting but not smoothly. It was more of a jerking mot

Quad feeders

Electronics Forum | Thu Jul 01 14:34:39 EDT 2010 | claudea2

I purchased a used QUAD 4C -136 and after a few months got the machine running 8 hr shifts. One issue I have come across is feeder drift. I kept re-aligning the feeder pickup positions but they would always change. Finally I got the time to measure

Universal Instruments Radial Inserter

Electronics Forum | Fri Aug 03 12:11:56 EDT 2007 | gmoritz

Any experience with the encoders and ball screws that drive the stage? We are seeing a pretty large y-drift from the 'top' to the 'bottom' of the board during x-travel. I've tried to measure this using the teach function and the x-drift from the sm

MPM AP/A Problem

Electronics Forum | Mon Sep 10 10:21:42 EDT 2007 | mgrimes

Having a problem with a MPM AP/A. Once a board is programmed; all is calibrated and the first board screened - each board thereafter drifts and gets progressively worse. The drift can range from barely off to half off the pad. Any ideas?

Metal Film Resistor Drifting

Electronics Forum | Tue Feb 14 06:15:52 EST 2012 | babithak

Can any one help me on articles about reasons for metal film resistor value drifting after working over a period of time Thank you

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